If you scan multiple hard copies to PDF with a scanner that automatically names the files, you most likely will need to rename those files. It is a pain in the ass to have to open each one individually, to see what it is in order to rename it. Well, it you can view them in a large icon preview, then you do not have to open each one in order to know what it is.

Or you can change the view option to Details, and turn on the preview pane...